Employment Act (Chapter 91): Primary legislation governing employment relationships in Singapore, particularly sections relating to misconduct investigations, fair investigation procedures, and employee rights during investigations

Tripartite Guidelines on Fair Employment Practices: Guidelines established by tripartite partners covering fair and transparent investigation procedures, non-discriminatory practices, and the employee's right to be heard

Personal Data Protection Act (PDPA): Legislation governing the handling of personal information during investigations, including confidentiality requirements and data protection obligations

Tripartite Guidelines on Wrongful Dismissal: Guidelines outlining proper investigation procedures to avoid wrongful dismissal claims, including documentation requirements and due process procedures

Industrial Relations Act: Legislation covering union representation rights and procedural requirements for investigations involving unionized employees

Natural Justice Principle: Fundamental legal principle ensuring fairness in investigation procedures and decision-making processes

Right to be Heard Principle: Legal principle ensuring employees have the opportunity to present their case and respond to allegations

Notice Period Requirement: Requirement to provide reasonable notice period for investigation meetings to allow adequate preparation

Companion Rights: Employee's right to bring a companion or representative to the investigation meeting

Confidentiality Requirements: Obligations to maintain confidentiality throughout the investigation process and protect sensitive information

Documentation Requirements: Obligations to maintain proper records and documentation of the investigation process and meetings